Chemical toilet cabana

ABSTRACT

A chemical toilet cabana comprising a plurality of initially identical shell sections, each having a dome-like roof, side walls terminating in a bell-like enlarged lower end and a base flange extending outwardly from the enlarged lower end of the side wall. The base flange is removed from a first shell section to form a cabana top. The dome-like roof is removed from a second shell section to form a cabana base and both the dome-like roof and the base flange are removed from other shell sections to form intermediate cabana shell members. The sections are stacked one upon the other with the wall of a section fitted within the enlarged lower end of the section immediately thereabove and with the walls of the sections substantially in vertical alignment. The base flange of the bottom section is fastened to a base skid which includes a filler material for weight and stability of the cabana.

I United States Patent 1191 Harding 1 51 Sept. 17, 1974 1 1 CHEMICAL TOILET CABANA l.'?1X y Kr Artis [75] Inventor, George Harding Warren, Mich llorney, Agent, or FirmCullen, Settle, Sloman &

antor [73] Assignee: Poly-San Corporation, Sarasota, Fla.

[22] Filed: July 11, 1973 57] ABSTRACT l l PP N05 378,316 A chemical toilet cabana comprising a plurality of initially identical shell sections, each having a dome-like 152 U.S. c1 ..4/116,4/119, 52/79 roof Side Walls terminating in a enlarged 51 1m. (:1 A47k 11/02 lower 8nd and a base flange mending outwardly from 581 Field of Search 4/3, 4, 2, 116, 115, 119; the enlarged lower end of the side wall- The base 52/79 flange is removed from a first shell section to form a cabana top. The dome-like roof is removed from a [56] References Cited second shell section to form a cabana base and both UNITED STATES PATENTS the dome-like roof and the base flange are removed from other shell sections to form intermediate cabana i: shell members. The sections are stacked one upon the 3:074:076 1/1963 K111511162:IIIIIII I II 4/115 other with the wan of a fiited within the 3,438,157 4/1969 Monica.................:.::::::::::.. /79 x larged of the seam 'i h 3,447,167 6 1969 Harding 4/116 above and the walls of the Sectlons Subsmmlany 3 60l,821 8/1971 Corsiglia 4/116 in vertical alignment The base flange 0f the bottom 3,629,874 12/1971 Belter 4/ 119 section is fastened to a base skid which includes a filler material for weight and stability of the cabana,

10 Claims, 11 Drawing Figures CHEMICAL TOILET CABANA BACKGROUND OF THE INVENTION The invention herein relates to outdoor chemicaltype toilet cabanas such as that illustrated in the US. Pat. to Harding, No. 3,447,167 of June 3, 1969. Chemical toilets used, for example, at construction and recreation sites, have been made of a unitary wood or plastic cabana structure containing toilet facilities. These structures are quite heavy and thus, difficult to transport or ship from the place of manufacture to the ultimate place of use. Moreover, they are difficult to clean and to repair when damaged.

Where relatively lightweight plastic cabanas are used, such as set forth in the above U.S. Pat. No. 3,447,167, other problems arise, because these cabanas provide insufficient stability, thus requiring an extremely heavy support base which increases the weight, cost, and difficulty of shipping. In addition, the cost of molding the many required parts, including the costs of the molds, is substantial, as is the cost of stocking numerous parts for replacement of damaged parts.

Thus, the invention herein relates to a relatively inexpensive, plastic molded, chemical toilet cabana which is easily transportable, is formed of relatively few parts, and is easily assembled.

SUMMARY OF THE INVENTION The invention herein relates to a chemical toilet cabana formed of a plurality of initially identical shell sections each having a dome-like roof, side walls terminating in a bell-like enlarged lower end, and a base flange extending outwardly from the bell-like lower end of the side wall. Each of these sections may be initially molded from the same mold.

Thereafter, the base flange is removed from a first section to form the top for a toilet cabana. The domelike roof is removed from a second section to form the bottom of the cabana, and both the dome-like roof and the base flange are removed from other sections to form intermediate sections of the cabana. The various sections are stacked one upon the other with the wall of a given section fitting within the enlarged bell-like lower end of the section thereabove and with the side walls of all the sections being substantially in vertical alignment.

The base flange of the bottommost section is connected to a base skid which may be in the form of a metal or plastic pan filled with an aggregate material for weight and covered over with a material, such as a foam plastic, which forms an interior surface for the cabana floor. The side walls of the bottommost shell section has a plurality of vent slots formed therein at the upper edge of the shell to provide for adequate ventilation.

When the sections are stacked one upon the other, they may be riveted together and the bell-like enlarged lower ends provide not only a riveting surface for all sections but also act as a louver to prevent water, such as rainwater, from entering the slots of the bottommost section.

These and other objects and advantages of the present invention will become apparent upon reading the following description taken in conjunction with the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS In the drawings, wherein like reference numerals identify corresponding parts:

FIG. 1 is a perspective illustration of a chemical toilet cabana according to the principles of the present invention;

FIG. 2 is an exploded perspective illustration of the chemical toilet cabana of FIG. 1;

FIG. 3 is a partial exploded view illustrating the seat, chemical tank and base support for the cabana of FIGS. 1 and 2;

FIG. 4 is a perspective illustration of a single cabana shell section;

FIG. 5 is a front elevation of a single cabana shell section showing the planes through which the top and/or bottom may be removed;

FIG. 6 is an illustration of the stacking and joining of two vertical sections;

FIG. 7 is an illustration of a plurality of sections joined together to form a complete shell;

FIG. 8 is a perspective illustration, partly broken away, of the base skid of the present invention;

FIG. 9 is a front elevation view of the skid of FIG. 7;

FIG. 10 is a side elevation of the base skid of FIG. 7; and

FIG. 11 is a perspective illustration of another embodiment of the base skid of the present invention.

DETAILED DESCRIPTION OF THE INVENTION The chemical toilet cabana 10 of the present invention is formed of a plurality of initially identical shell sections 12 including a top section 14, a plurality of intermediate sections 16 and a bottom section 18. The bottom section 18 is secured to a base skid 20.

The wall of each section has a cut-out or opening 22 into which a molded frame 24 may be attached. A door 26 may be fastened to the frame 24 such as by hinges. The inside of the chemical toilet cabana may include a urinal 28, and a toilet 30 which may be part of a seat unit 32. As illustrated in greater detail in FIGS. 2 and 3, a chemical holding tank 34 may be provided beneath the toilet 30.

With respect to FIGS. 4-7, each individual shell section 12, which may be molded of plastic or the like, initially includes a dome 40, side walls 42 and front flanges 46 to which the door frame 24 may be secured.

The side walls 42 terminate at their lower end in a bell-like enlarged portion or louver 48 and each section includes a base flange 50 which extends outwardly in all directions from the bell-like enlarged end 48. In the base flange 50 there are a plurality of holes 52 through which bolts may be inserted for securing the bottommost section to the base skid 20.

Each of the shell sections are initially in the form illustrated in FIG. 4. Thus, they may be all manufactured from the same mold. It is an important feature that these shells 12 are initially identical since the height of a particular cabana may be varied by adding or eliminating intermediate sections 16 as in FIGS. 1 and 2. Using identical sections also reduces the cost of tooling and preparing molds.

After the shells 12 have been molded in the form shown in FIG. 4, they are selectively cut to form the individual top, intermediate, and bottom shell sections.

With reference to FIG. 5, it is seen that the dome 40 may be removed by cutting through a plane indicated at 54. By removing the dome 40, the remaining portion of the shell section 12 becomes a bottom shell section 18 as in FIGS. 1 and 2. Vents 44 are formed in the side walls of the bottom section 18.

Another shell 12 may have its base flange 50 removed by a cut through the plane indicated at 56 in FIG. 5. The resulting shell becomes a top section 14 as in FIGS. 1 and 2.

Additional shells 12 may have both the dome 40 and the base flange 50 removed by making cuts through both planes 54 and 56. This results in intermediate shell sections 16 as in FIGS. 1 and 2.

Once the desired number of shell sections, top, bot tom and intermediate, have been cut, the sections are stacked in substantial vertical alignment with the side wall 42 of a given section extending into the bell-like enlarged lower end 48 of the section immediately thereabove. As illustrated in FIG. 5, rivets 58 may be utilized to secure each bell-like lower end'48 to the side wall 42 stacked therein.

The bell-like lower end 48 acts as a surface through which the rivets may pass and further acts as a louver to prevent water from passing through the vents 44 in the bottom section. This keeps moisture out of the holding tank while permitting continuous ventillation.

After the shell sections are stacked with their side walls 42 in substantial vertical alignment, the door frame 24 may be inserted into the cut-out 22 and attached to the flange 46 such as by riveting or the like. Then the door 26 is secured to the frame.

The parts forming the cabana may be shipped from the manufacturing plant to local service centers, for assembly of the unit and then local transportation to the site of use. Alternatively, the parts may be shipped to and assembled at the site of use, as for example, at a construction site. So little equipment is necessary for such assembly, such as riveting tools, that such equipment is readily available at most construction sites.

Once the wall sections have been fastened together, the base flange 50 of the bottom section 18 may be secured to a base skid 20 such as by having bolts in the skid which extend upward through the holes 52. Alter natively, bolts may be inserted downward through the holes 52 into the base skid.

FIGS. 9 and illustrate a base skid formed of a metal or plastic pan 60 having runners 62 thereunder to form a supporting surface, which rests upon the ground, and having a front portion 64 which is raised to support the floor. The base skid also includes a depression 66 to support the chemical tank 34 when the entire cabana is assembled. Also illustrated are bolts 68 exending upwardly from the base skid.

Since the base skid is initially separate from the cabana, a plurality of base skids may be nested together for shipment. The area above the runners 62 of the skid may be filled with a stone aggregate material 70 to add weight and stability to the skid. Then, a material such as high density polyurethane or a rigid thermosetting polystyrene 72 may be foamed over the skid to provide a finished surface in all areas. This foamed material provides a finished surface for the interior support of the cabana floor.

FIG. 11 illustrates another embodiment of the skid 20 including a pan 60 with runners 62 and having internal front and rear raised projections 74. 76 with a space 78 therebetween. The rear projection 76 includes a depressed area 66 to receive the chemical holding tank 34. In this embodiment, the area of the pan above the runners 62 and the area surrounding the projections 74, 76, including space 78, may be filled with stone aggregate or cement to add bottom weight for stability. Then a covering, such as plastic, is placed over the top of the skid and tank to support the seat 30. Again, the empty skids may be nested together for shipping purposes.

It should be understood that the concepts of the present invention are not restricted to the manufacture of a chemical toilet cabana but may be utilized for any enclosure wherein it is desired to manufacture the enclosure of a plurality of sections which are initially identical and which may be modified slightly to fit one within the other to comprise top, intermediate and base sections. The enclosure may be shipped in a knock-down form to be assembled at the place of use and at that time attached to a base skid which provides the stability necessary such as to withstand the force of wind at outdoor construction areas.

The invention may be further developed within the scope of the following claims. Accordingly, the foregoing description should be read only as illustrative of an operative embodiment of this invention and not in a limited sense.

What is claimed is:

1. A portable toilet enclosure formed of at least two individual sections, comprising:

a top section having an upper dome and a side wall,

the side wall terminating in a downward and outward louver; and

a bottom section having an open top, a side wall terminating in a downward and outward louver, and a fiat, outwardly extending base;

said top section being stacked on said bottom section with the side wall of said bottom section fitted within the louver of said top section, and with the side walls of both said sections being substantially vertically aligned,

whereby the louver of said top sections prevents water from entering said bottom section at the region where said sections are stacked together.

2. The construction as in claim 1 and further includat least one center section between said top and bottom section;

said center section having a side wall terminating in a downward and outward louver and having an open top and bottom;

said center section being stacked between said top and bottom sections with the side wall of each section fitted within the louver of the section immediately thereabove and with the side walls of all sections being substantially in vertical alignment.

3. The construction as in claim 1 and further includa base skid secured to said bottom section, said skid adapted to receive a chemical toilet,

said skid including a heavy filler material to provide stability for said enclosure.

4. The construction as in claim 2 wherein some of said sections include a vertically aligned cut-out to receive a frame; said construction further including:

a frame secured to said cut-out areas and vertically spanning said sections; and

a door mounted on said frame for convenient entry into and egress from said enclosurev 5. The construction as in claim 4 and further includa base skid, including a heavy aggregate filler and attached to said bottom section for supporting and stabilizing said enclosure, and

a chemical tank supported on said base skid.

6. The invention as defined in claim 1 and further including a base skid adapted to receive said bottom section, ssaid base skid comprising:

a generally rectangular base pan having upwardly and outwardly projecting side walls to thereby define an interior portion of said skid;

said base skid having internally raised formations interior of its side walls so that a part of the base skid is above the plane of the remainder of the base skid;

said base skid including a relatively heavy filler material; and

a covering over said filler material, said covering serving as a floor for the enclosure and adapted to receive a chemical toilet or the like;

whereby the base skid may be fastened to the bottom of said bottom section with bolts so that the weight of said filler material provides a stable support for said enclosure.

7. The construction as in claim 6, wherein said covering is a foamed material which remains rigid and stable after being foamed over said base pan.

8. The construction as defined in claim 2, wherein each of said sections is initially a shell having:

a dome-like roof;

a side wall extending downwardly from said domelike roof and terminating ain a bell-like enlarged lower end; and

a base flange extending outwardly from the enlarged lower end of said side wall;

whereby said dome-like roof may be removed to form a bottom section for said enclosure, said base flange may be removed to form a top section of said enclosure, and both said dome-like roof and said base flange may be removed to form a center section of said enclosure.

9. A portable toilet enclosure formed of at least three individual sections, comprising:

a top section having an upper dome and a side wall,

the side wall terminating in a downward and outward louver;

a bottom section having an open top, a side wall terminating in a downward and outward louver, and a flat, outwardly extending base; and

at least one center section between said top section and said bottom section;

said center section having a side wall terminating in a downward and outward louver and having an open top and bottom;

said top section being stacked on a center section with the side wall of the center section fitted within the louver of said top section and with a center section being stacked on said bottom section with the side wall of the bottom section fitted within the louver of the center section immediately thereabove, and with the side walls of all of said top, center and bottom sections being substantially in vertical alignment;

whereby the louver of each section prevents water from entering the section therebeneath at the region where said sections are stacked together.

10. The invention as defined in claim 9, wherein each of said section is initially a shell having:

a dome-like roof;

a side wall extending downwardly from said domelike roof and terminating in a bell-like enlarged lower end; and

a base flange extending outwardly from the enlarged lower end of said side wall;

whereby said dome-like roof may be removed to form a bottom section for said enclosure, said base flange may be removed to form a top section for said enclosure, and both said dome-like roof and said base flange may be removed to form a center section for said enclosure. 

1. A portable toilet enclosure formed of at least two individual sections, comprising: a top section having an upper dome and a side wall, the side wall terminating in a downward and outward louver; and a bottom section having an open top, a side wall terminating in a downward and outward louver, and a flat, outwardly extending base; said top section being stacked on said bottom section with the side wall of said bottom section fitted within the louver of said top section, and with the side walls of both said sections being substantially vertically aligned, whereby the louver of said top sections prevents water from entering said bottom section at the region where said sections are stacked together.
 2. The construction as in claim 1 and further including: at least one center section between said top and bottom section; said center section having a side wall terminating in a downward and outward louver and having an open top and bottom; said center section being stacked between said top and bottom sections with the side wall of each section fitted within the louver of the section immediately thereabove and with the side walls of all sections being substantially in vertical alignment.
 3. The construction as in claim 1 and further including a base skid secured to said bottom section, said skid adapted to receive a chemical toilet, said skid including a heavy filler material to provide stability for said enclosure.
 4. The construction as in claim 2 wherein some of said sections include a vertically aligned cut-out to receive a frame; said construction further including: a frame secured to said cut-out areas and vertically spanning said sections; and a door mounted on said frame for convenient entry into and egress from said enclosure.
 5. The construction as in claim 4 and further including: a base skid, including a heavy aggregate filler and attached to said bottom section for supporting and stabilizing said enclosure, and a chemical tank supported on said base skid.
 6. The invention as defined in claim 1 and further including a base skid adapted to receive said bottom section, ssaid base skid comprising: a generally rectangular base pan having upwardly and outwardly projecting side walls to thereby define an interior portion of said skid; said base skid having internally raised formations interior of its side walls so that a part of the base skid is above the plane of the remainder of the base skid; said base skid including a relatively heavy filler material; and a covering over said filler material, said covering serving as a floor for the enclosure and adapted to receive a chemical toilet or the like; whereby the base skid may be fastened to the bottom of said bottom section with bolts so that the weight of said filler material provides a stable support for said enclosure.
 7. The construction as in claim 6, wherein said covering is a foamed material which remains rigid and stable after being foamed over said base pan.
 8. The construction as defined in claim 2, wherein each of said sections is initially a shell having: a dome-like roof; a side wall extending downwardly from said dome-like roof and terminating ain a bell-like enlarged lower end; and a base flange extending outwardly from the enlarged lower end of said side wall; whereby said dome-like roof may be removed to form A bottom section for said enclosure, said base flange may be removed to form a top section of said enclosure, and both said dome-like roof and said base flange may be removed to form a center section of said enclosure.
 9. A portable toilet enclosure formed of at least three individual sections, comprising: a top section having an upper dome and a side wall, the side wall terminating in a downward and outward louver; a bottom section having an open top, a side wall terminating in a downward and outward louver, and a flat, outwardly extending base; and at least one center section between said top section and said bottom section; said center section having a side wall terminating in a downward and outward louver and having an open top and bottom; said top section being stacked on a center section with the side wall of the center section fitted within the louver of said top section and with a center section being stacked on said bottom section with the side wall of the bottom section fitted within the louver of the center section immediately thereabove, and with the side walls of all of said top, center and bottom sections being substantially in vertical alignment; whereby the louver of each section prevents water from entering the section therebeneath at the region where said sections are stacked together.
 10. The invention as defined in claim 9, wherein each of said section is initially a shell having: a dome-like roof; a side wall extending downwardly from said dome-like roof and terminating in a bell-like enlarged lower end; and a base flange extending outwardly from the enlarged lower end of said side wall; whereby said dome-like roof may be removed to form a bottom section for said enclosure, said base flange may be removed to form a top section for said enclosure, and both said dome-like roof and said base flange may be removed to form a center section for said enclosure. 